initial code for session_track unit test

test/unit/packets/test-ok-sessiontrack.js

@@ -0,0 +1,34 @@
+'use strict';
+
+const assert = require('assert');
+const Packet = require('./lib/packets/packet');
+const ResultSetHeader = require('./lib/packets/resultset_header.js');
+const clientConstants = require('../../../lib/constants/client');
+
+const mockConnection = {
+  config: {},
+  serverEncoding: 'utf8',
+  _handshakePacket: {
+    capabilityFlags: clientConstants.PROTOCOL_41 + clientConstants.SESSION_TRACK
+  }
+};
+
+const mkpacket = str => {
+  const buf = Buffer.from(str.split(/[ \n]+/).join(''), 'hex');
+  return new Packet(0, buf, 0, buf.length);
+};
+
+const packet2 = mkpacket(
+  '15 00 00 01 00 01 fc 41 0d 03 40 00 00 00 0a 14 08 fe 1a 54 1c 06 00 00 00'
+);
+
+const unknownTypeSession = hexbuf(
+  `1b 00 00 01
+     00 
+     01 fe 65 96 fc 02 00 00 00 00 03 40 00 00 00 0a 14 08 fe 60 63 9b 05 00 00 00
+    `
+);
+
+const ResultSetHeader = mkpacket('./lib/packets/resultset_header.js');
+const rs = new ResultSetHeader(p, mockConnection);
+console.log(rs);